Air circulator for stoves



June 8, 1943. I "ma, CZAJA 2,321,132

' AIR cilipumi'on F611 s'rovss Fil ed Jim. 31, 1942 Patented June 8, 1943 UNITED STATES PATENT, OFF-ICE- AIR CIRCULATOR FOR 'STOVES Walter B. Czaia, Chicago, 111. Application January 31, 1942,. Serial No. 428,987

' 9 Claims. (Cl. 126-110) The present invention relates to air circulators for stoves and has for its principal object the provision of a device insertable within a stove for the purpose of heating therein the air and drawing the same off and expelling the same to the dwelling.

A still further object of the present invention is the provision of a device of the character stated,

which may be provided with a plurality of ducts, through some of which the air is drawn into the device to be heated, and through others the heated air may be drawn by suction and expelled into the dwelling.

A still further object of the present invention is the provision of an air circulator for stoves for the purpose of utilizing the temperature of combustion gases, which would otherwise escape into the chimney, for heating the air in the air circulator and thereupon drawing the same off into the dwelling by means of suction.

With the above general objects in view and others that will appear as the invention is better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawing and pointed out in the appended claims.

In the drawing forming a part of this application and in which like designating characters refer to corresponding parts throughout the several views,

Fig. l is a vertical cross-sectional view through a stove withthe present device shown therein in elevation in an operative position;

Fig. 2 is an enlarged cross-sectional view on line 22 of Fig. 1;

Fig. 3 is an enlarged cross-sectional View on line 33 of Fig. 1;

Fig. 4 is an enlarged top plan view of the air circulator; and

Fig. 5 is an enlarged cross-sectional view therethrough on a horizontal plane.

Referring in detail to the present drawing there is' shown therein a stove l0, provided adjacent its upper end with a laterally extending flu section H, to which normally a usual flue is adapted to connect and through which smoke and combustion gases are adapted toescape into the chimney. The air circulator generally indicated by lator, and in a spaced relation, is a. pair of partition walls It, which, by means of their angularly disposed legs I! are rigidly afiixed to horizontal walls I4. Said partition walls l6 divide the tubular housing of the air circulator into a pair of outer air ducts 18, disposed adjacent side walls l3, and a central duct l9.

The inner ends of side walls 13 and their tapers l5 are joined to form a semi-circular seal 20, and

to further complete the seal of the inner end of the tubular housing of the air circulator 12, the inner ends of horizontal walls It thereof are trimmed to form semi-circles 2|, which by their margins join the adjacent circular marginal edges of tapers IS. The inner ends of partition walls [6 terminate short of the circular formations of inner ends of side walls .l3, tapers l5 and horizontal walls It, as at 22. The air chamber defined by the circular inner ends of said side walls l3, tapers l5 and inner ends of horizontal walls l4, constitutes a header 23.

The outer ends of side walls [3 and their tapers l5 terminate short of the outer ends of horizontal walls It and partition walls l6, by virtue of which arrangement said horizontal walls l4 and partition walls l6 form an extension 24 at the outer ends thereof, for duct l9, for the purpose hereinafter stated.

Intermediately of the two ends of the air circulator horizontal walls M are provided with aligned longitudinal slots 25. The marginal edges of horizontal walls l4 defined by said slots 25 are rigidly connected bywall 26, for the purpose of increasing the radiation surface for duct IS.

The device further includes a horizontal pipe 21, within which air circulator I2 is positioned centrally thereof and rigidly malntainedtherein by means of a plurality of supporting lugs 28. The inner end of pipe 21 is insertable upon flue section I I, whereby the two frictionally inter-engage, and thereby maintain pipe 21 and air circulator |2in an operative position with respect to stove Ill.

The outer end of pipe 21 is provided with a rigidly formed and inwardly extending seal plate tends upwardly and above air circulator l2*and connectes with chimney for providing passage of smoke and combustion gases from stove l0.

Insertable in any convenient manner upon ex;-

, said air circulator l2, remaining within the stove aduct l9 by virtue of suction therewith, is an air pump casing 3|, which contains usual air suction plates 32 positioned upon shaft 33, which is rotated by means of an electric motor 34. At the periphery of casing 3| an opening 35 is located for the purpose of expelling air therefrom which in turn was sucked out from duct l9.

From the hereinabove description it will be seen that in an operative position of air circulator l2, a substantial portion of its inner end remains within end, and disposed above its fire pot. The heated air, smoke and combustion gases circulate around both around its portion well as its portion positioned withinflue section II and pipe 27. Thus the'air remaining within ducts i8 and I9 as well as in the header 23 will be heated. The heating of air within duct I9 is further facilitated by means of theradlation wall 26 within slots 25.

Assuming that air pump 32 is in operation, suction of air is created in duct l9, drawing the same from the air circulator into the dwelling atmosphere through opening 35 as long as said air pump 32 operates, and continuous suction upon the air in duct l9 will be had, thereby caus lng air from the dwelling to enter into ducts l8, and through the opening made at the outer ends of side walls l3 and tapers i5 andthe adjacent faces of partition walls Hi. The air entering through these openings will be caused to flow along ducts I8 and towards header 23, and in the direction indicated by arrows in Fig. 5. The flowing air will of course be heated by the combustion gases circulating around the air circulator, as indicated by arrows in Fig. 1. The air flowing into header 23 will be caused to enter thereon exerted by pump 32 and reverse its direction indicated by arrows in Fig. 5, until it enters pump casing 3i and until it is expelled therefrom by fan 32 and through opening 35 into the dwelling.

It is observed, that since the outer faces of sidewalls I3, tapers l5 and horizontal walls It! are exposed to the action of the temperature of the circulating combustion gases around air circulator l2, the flowing air, both in ducts i8 and duct I 9 will be constantly heated as long as the same remains within the air circulator.

While there is described herein a preferred embodiment of the present invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

What I claim as new is:

1. An air circulator comprising an elongated hollow member including a pair of spaced horizontal walls and a pair of side walls, said horizontal walls and said side walls merging at one end of said member for forming a sealed header,

and a Pair of Spaced partition walls vertically disposed in said member, the inner ends of said partition walls terminating short of said header, said partition walls in conjunction with said side walls defining a pair of lateral air inlet ducts and a central outlet duct, the outer ends of said horizontal and partition walls extending beyond the corresponding termination of said side walls.

2. In combination with a stove including a flue section, a pipe "engageable and supportable by said flue section, elongated hollow member positioned within said pipe and extending stove l0 and adjacent its upper through said flue section into thestove, said rim- 2,821,132 v tension 24 and in a rigid frictional engagement her having an open and a sealed. end, 'a flue extending from said pipe, the outer'open end. of said member extending beyond said pipe, means for causing flow of air into and out of said mem-' her through its open end, means for rigidly supporting said member within said pipe, anda sealing plate extending from the outer end 01' said pipe and engaging the perimeter of said member adjacent its open end.

3= In combination with a stove including a flue, an elongated hollow member having a sealed and an open end positioned extending into the stove by its sealed end, the outer open end of said member extending beyond said flue, partition walls ber and in a longitudinal relation therewith, said partition walls in conjunction with the walls of said member defining air inlet ducts and an outlet duct, said partition walls terminating short of the sealed end of said member for facilitating an unobstructed flow of into said outlet duct, means at the open endof said member and in association with said outlet duct for forcing the air into said inlet ducts and out of said outlet duct, and means for rigidly supporting said member within said flue.

4. In combination with a stove including a flue, an elongated hollow member having a sealed and an open end positioned within said flue and extending into the stove by its sealed end, the outer open end of said member extending beyond said flue, partition walls within said hollow memher and in a longitudinal relation therewith, said partition walls in conjunction with the walls of said member defining air inlet ducts and an outlet duct, said partition walls terminating short of the sealed end of said member for defining a continuous passage for air from said inlet ducts into said outlet duct, means at the open end of said member and in association with said outlet duct for forcing the air into said inlet ducts and'out of said outlet duct, and means for rigidly supporting said member within said flue.

5. In combination with a stove including a flue. an elongated hollow member including a pair of horizontal walls and a pair of vertical walls, said walls at one end thereof being joined to form a seal at one end of said member, a pair of partition walls within said member and in a substantially parallel relation with said vertical walls, said partition walls in conjunction with the walls of said member defining a pair of outerair ducts and a central air duct, said partition walls terminating short of the sealed end of said member for defining a continuous passage for air from said outer ducts into said central duct, said partition walls by their outer ends and the adjacent portions of said horizontal walls extending beyond the outer ends of said side walls and said outer air ducts for defining a stud, said sealed end of said member extending within the stove, means in said flue forsupporting said member in an operative position, a sealing plate extending from the outer end of said flue and engaging the perimeter of said member adjacent the outer termination of said vertical walls, and means positioned upon within said flue and within said hollow mem-- air from said inlet ducts said member and in a substantially parallel relation with said vertical walls, said partition walls in conjunction with the walls of said member defining a pair of outer air ducts and a central air duct, said partition walls terminating short of the sealed end of the said member for defining a continuous passage for air from said outer ducts into said central duct, said partition walls by their outer ends and the adjacent portions of said horizontal walls embraced by said partition walls extending beyond the outer ends of said sid walls.

7. As an article of manufacture, an air circulator for stoves comprising an elongated hollow member substantially rectangular on transverse cross-section, the walls of said member at one end thereof being joined to form a seal, and a pair of partition walls within said member and in a substantially parallel relation with a pair of oppositely disposed walls of said member for defining a pair of outer air ducts and a central duct, said partition walls terminating short of said seal for defining a continuous passage for air from said outer ducts into said central duct, said partition walls by their outer end and the adja- -cent portions of the other pair of oppositely disposed walls of said member embraced by said partition walls extending beyond the outer ends of said first named pair of said oppositely disposed walls.

8. An air circulator comprising an elongated hollow member including a pair of spaced horizontal walls and a pair of side walls, said horizontal walls and said side walls merging at one end of said member for forming a sealed header, a pair of spaced partition walls vertically disposed in said member, the inner ends of saidpartition walls terminating short of said header, said partition walls in conjunction with said side walls defining a pair of lateral air inlet ducts and a central outlet duct, the outer ends of said horizontal and partition walls extending beyond the corresponding termination of said side walls for defining an extension, and means receivable by said extension for drawing the air entering said header through said inlet air ducts.

9. An air circulator comprising an elongated hollow member including a pair of spaced horizontal walls and a pair of side walls, said horizontal walls and said side walls merging at one end of said member for forming-a sealed header, a pair of spaced partition walls vertically disposed in said member, thev inner ends of said partition walls terminating short of said header, said partition walls in conjunction with said side walls defining a pair of lateral air inlef. ducts and a central outlet duct, the outer ends of said horizontal and partition walls extending beyond the corresponding termination of said side walls for defining an' extension, and an air pump receivable header through said inlet air ducts.

WALTER B. c2105. 

